该文介绍一种基于FLASH的智能卡文件系统,此文件系统在设计上不仅注重空间效率,还注重时间效率.以尽可能小的代价,提高智能卡的数据存储、读写、检索的速度,有效的实现智能卡应用中存储空间的释放、回收、重用,延长了Flash的使用寿命,保证了数据写操作的一致性、完整性.仿真实验证实了该文件系统设计的有效性与正确性.“,”The paper introduces file system design for smart card based on flash, it not only pay attention to space efficiency, but also time efficiency. At the least cost, improve the rate of the data storage and read and write and retrieve, it efficiency achieves storage release and reclaim and reuse, prolong the flash storage life-span, assure the data consistency and integrality. The simulation makes sure the file system’s validity and correctness.